Coupling



(No Model.)

I. P. DOOLI'TTLE.

COUPLING.

Patented Oct. 18, 1892.

W/TNESSES A Tram/5 rs:

'w: annals PETER cm, morn-1.17am, WASHINGTON, o, c.

UNTTED STATES PATENT Fries.

IRVIN P. DOOLITTLE, OF REDLANDS, CALIFORNIA.

COUPL l NG.

SPECIFICATION forming part of Letters Patent No. 48 4,656, dated October18, 1892.

Application filed December 29, 1891- Serial No. 416,460. (No model.)

To all whom it may concern:

Be it known that I, IRVIN P. DOOLITTLE, of Redlands,in thecountyof SanBernardino and State of California, have invented a new and usefulcoupling, of which the following is a full, clear, and exactdescription.

My invention relates to an improved means for speedily and firmlyconnecting sections of pipes, hose, or solid rods at their ends in amanner that will allow them to be detached when this is desired; and itconsists in the peculiar construction and-combination of parts,

the coupling in a coupled condition.

as is hereinafter described and indicated in the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the views.

The drawings show the preferred form of the coupling, which is adaptedto detachably connect flexible hose-sections, similar letters ofreference indicating corresponding parts in the several views.

Figure 1 is a side View of the device in opened adjustment. Fig. 2 showsthe parts of Fig. 3 is a longitudinal section of the male and femalecoupling-sections partly connected, the section being taken on the line3 3 in Fig. 4, viewed in the direction of an arrow in said figure. Fig.4 is a transverse section of the two coupling-pieces assembled but notlocked together, the section-line being indicated at A L in Fig. 3. Fig.5 is alongitudinal section of two coupling-sections in closed adjustment, the line of section being shown at 5 5 in Figs. 2 and 7. Fig. 6is a transverse section of the male and female sections of the couplingengaged, the locking device for said parts being shown partly adjustedto hold said sections united. Fig. 7 is a cross-section of the twocoupling-sections in coupled condition, taken on the line7 7 in Fig. 5;and Fig. 8 is a side View of the locking device used to hold the maleand female couplingsections together in a clamped condition.

Two coupling-sections A B are provided, the first named being designedto receive the other when parts to which the sections are joined or forma part of are to be connected. The female piece A of the coupling iscylindrical, and upon its main portion ribs a are a tubular hose whenthe latter is secured upon it by wire-wrapping or other means.

The part A of the coupling-section A is diametrically enlarged,producingan internal shoulder at b, whereon a leather or gum washer c is seated.A sufficient proportionate length is given to the socket portion A, andon its outer side two cars (l are projected therefrom in parallel planesand suitably separated, and between said ears a transverse slot isformed in the wall of the socket to permit a locking device to beinserted, as will be explained.

The male piece B has ribs 0. formed ra dially upon its body, similar tothe ribs a on the coupling-section A, and for a like pur pose. There isa cylindrical end portion 13 formed on the male section B that is ofsuch a relative diameter as will allow it to slide within and looselyfit the socket-portion A of the coupling-section A. At a proper distancefrom the end e of the male piece B a collar gis radially formed on thelatter, which collar will lie adjacent to one of the ears d when themale and female sections are connected, and the end 6 of the maleportion B is made to bear upon the washer c.

The device for detachably holding the male and female sections B A inlocked condition, so that a water or air tight joint is produced whereeach part impingeson the joint-washer 0, consists of a lever G, whereona substantially-cylindrical hub-enlargement his formed at one end. Thehub portion h of the lever O is of such a thickness as will adapt it tofreely rock between the ears d, to which it is pivoted by a fulcrum-bolt2', that passes through aligning holes in the ears and hub portionnamed.

Upon the exterior of the hub h a spiral rib h is formed, which starts onone side edge of the hub, as at 72 and crossing diagonally, terminatesat the other side edge of the same, merging into an integral radialflange portion h that extends a proper distance along the side of thehub h, thus increasing its frictional bearing-surface on the adjacentear d.

Thelimb of the lever G is extended of a length sufficient to afford thenecessary leverage for its vibration manually and is preferablyflattened to facilitate manipulation, a curve being produced atm tocause the lever to lie in close contact with the exterior of the socketportion A, as shown in Fig. 7, when it is folded toward said piece.

A transverse channel 17. (see Fig. 1) is formed in the portion B of themale coupling-section B by a depression of the material in theoylindrical wall, the side edges of which channel are substantiallyparallel and range diagonally with regard to the axis of thecouplingsection B. The position given to the channel a is such as willallow it to lie directly below the hub h of the lever 0, when the twocoupling-sections A B are slid together, the edge at of the channel 'nthat is nearest to the end 6 of the male section B being such aproportionate distance removed from said end as to permit the spiralcam-rib h to engage with it and enable the cam-lever C by its vibrationin a proper direction to force the end e against the joint-washer 0, soas to produce an air-tight or water-tight joint between the joinedcoupling-sections.

On the end portion of the fulcrum bolt i that is nearest to the radialflange or collar 9 a preferably-cylindrical head 11' is formed, and inthe collar named a scalloped notch g is cut, that is properly located toreceive a part of the bolt-head when the coupling-sections A B arejoined and about to be locked together by a manipulation of thelever C,as has been explained.

It will be seen that when the male section B is slid within the socketportion A of the other coupling-section the sliding engagement of thebolt-head z" with the notched collar 9 will retain the sections fromrotatable movement when the lever O is vibrated. Furthermore, the head1" and notch g serve as guides to indicate the proper alignment of thechannel at below the hub hof the lever C, so that the coupling-sectionsmay be readily coupled and secured in the dark by aligning said guidesas the parts are brought together.

As before mentioned, the spiral cam-rib h is prolonged on one side edgeof the hub h as a radial flange 71. which has its fiat side face broughtinto contact with the inner side face of the adjacent ear d when thelever O is rocked into the position shown in Fig. 7, so as to effect atight joint between the male and female coupling-sections, whereby thefriction of contact serves to retain the lever in folded adjustmentuntil it is manipulated to release the coupling-sections from eachother.

It will be apparent that by a slight and obvious change in form thecoupling-sections A B may be adapted for attachment upon metal tubing orsolid rods, such as shafting or pumprods, or the coupling portions maybe formed integrally therewith, if desired, and thus afford ready andreliable means for the quick attachment of tube or rod sections togetherendwise, such modifications of form and use being manifestly within thescope of the invention.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent-- 1. In a coupling, a spiral-cam locking-leverwhich is pivoted in a slot on the female coupling-section and has anadjustable interlocking connection with a channel-shoulder on the otheror male coupling-section, substantially as described.

2. The combination, with a male couplingsection and a femalecoupling-section, of a spiral-ribbed cam-lever pivoted to vibratetransversely on the female section and adapted to interlock its rib witha transverse shoulder on the male section, substantially as described.

3. The combination, with a male couplingseotion having a diagonalchannel on it near one end and a female coupling-section whereon twoparallel transverse ears are formed with a slot between, of a leverhaving a hubenlargement on one end pivoted between the cars, a spiralrib on the hub, and a jointwasher between the coupling-sections,substantially as described.

4:. The combination, with a male couplingsection having a diagonalchannel formed near one end and a radial collar near said end having asingle scalloped notch, of afemale coupling-section having two paralleltransverse ears thereon and slotted between said cars, a lever having ahub on one end, a spiral cam-rib on the hub, a fulcrum-bolt passingthrough the ears and hub, and a head on said bolt which enters thescalloped notch of the collar when the sections are assembled,substantially as described.

5. Acoupling comprising a male section diagonally channeled near oneend, a female section, two transverse ears thereon near one end, spacedapart and slotted between, a lockin g-lever, acylindrical hub on saidlever, which is pivoted between the ears, and a spiral camrib on saidhub which merges into a radial flange along one side edge of the hub,substantially as described.

6. The combination, with a cylindric male coupling-section having adiagonally-transverse channel in it near one end and a radial collar onthis section near the same end, having a single scallop in its edge, ofa female coupling-section, a pair of spaced ears thereon between which aslot is formed, a bent lever pivoted between the ears and provided witha hub at one end, a spiral rib on the hub which merges into a radialflange on one side of the hub,a fulcrum-bolt passing through the earsand hub, and a head on the fulcrumbolt, which engages the scallop on themale coupling-section when the coupling-sections are connected,substantially asdescribed.

, IRVIN P. DOOLITTLE.

Witnesses:

FRANK KASSON, T. H. SHARPLESS.

